Move tracing namespace from base::debug to base::trace_event.

content/renderer/scheduler/renderer_scheduler_impl.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_IMPL_H_
 #define CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_IMPL_H_
 
 #include "base/atomicops.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_checker.h"
 #include "content/renderer/scheduler/cancelable_closure_holder.h"
 #include "content/renderer/scheduler/renderer_scheduler.h"
 #include "content/renderer/scheduler/single_thread_idle_task_runner.h"
 #include "content/renderer/scheduler/task_queue_manager.h"
 
 namespace base {
+namespace trace_event {
+class ConvertableToTraceFormat;
+}
 namespace debug {
-class ConvertableToTraceFormat;
+using ::base::trace_event::ConvertableToTraceFormat;
 }
 }
 
 namespace content {
 
 class RendererTaskQueueSelector;
 
 class CONTENT_EXPORT RendererSchedulerImpl : public RendererScheduler {
  public:
   RendererSchedulerImpl(
@@ skipping 112 matching lines @@
 
   base::WeakPtr<RendererSchedulerImpl> weak_renderer_scheduler_ptr_;
   base::WeakPtrFactory<RendererSchedulerImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererSchedulerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_IMPL_H_